The axes are dY over time, not X vs Y. Thought it should be abundantly obvious to anyone frequenting this forum.

They weren't perfectly clear with the labeling or explaining of this plot, but it seemed to me they were moving the mouse at high speed on the x direction and plottinging the change in the y direction reported vs time. This is showing that the Logitech and Razer mice are malfunctioning while the steel series is not.

They weren't perfectly clear with the labeling or explaining of this plot, but it seemed to me they were moving the mouse at high speed on the x direction and plottinging the change in the y direction reported vs time. This is showing that the Logitech and Razer mice are malfunctioning while the steel series is not.

No, the only test that they'd likely do is to run it on the y direction at constant (high) speed on a turntable and subtract the average value from the dataset.